Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post

freebeard · 02-05-2022, 03:45 PM

Two consecutive stories on SlashDot today:

New 'Game-Changing' Technology Removes 99% of CO2 From the Air (interestingengineering.com)
Posted by BeauHD on Saturday February 05, 2022 @02:00AM from the carbon-capture dept

Quote:

Engineers from the University of Delaware developed a method for effectively capturing 99 percent of carbon dioxide from the air using an electrochemical system powered by hydrogen, a press statement reveals. Interesting Engineering reports:

Quote:

The new system, outlined in a new paper in the journal Nature Energy, was actually born out of a setback in another research project. The team behind the new technology was originally working on hydroxide exchange membrane (HEM) fuel cells, a more affordable and environmentally friendly alternative to traditional acid-based fuel cells. While working on that technology, the team was faced with a serious obstacle. HEM fuel cells, they found, are very sensitive to carbon dioxide in the air, making it hard for the batteries to function properly.
[snip]
Today, the team has a more compact system that is capable of filtering greater quantities of air. According to the researchers, their soda can-sized early prototype device is capable of filtering roughly 10 liters of air per minute and of removing about 98 percent of CO2... The team's prototype is designed to scrub CO2 out of a vehicle's exhaust, though it could also be used for a number of other applications, including aircraft, spacecraft, and submarines.

Satellite Images Show Biggest Methane Leaks Come From Russia and US (newscientist.com)
Posted by BeauHD on Friday February 04, 2022 @10:30PM from the super-emitting-events dept.

Quote:

About a tenth of the global oil and gas industry's methane emissions have been found to come from a group of "ultra-emitter" sites located mostly in Turkmenistan, Russia and the US. Methane is a powerful greenhouse gas that governments recently agreed to slash by 2030. While huge plumes of methane leaking from gas pipelines have been detected by satellites at individual sites, such as a gas well in Ohio and several pipelines in central Turkmenistan, little has been know about their extent globally.

Now, images captured by an instrument aboard a satellite have been run through an algorithm to automatically detect the biggest plumes of methane streaming from oil and gas facilities worldwide. These ultra-emitters were spotted pumping out more than 25 tons of methane an hour.